解题方法
1 . 已知
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e07a0c55558d1ed27d5d56d3d9ad5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd19aa7b5249f524950ca706baba4eee.png)
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解题方法
2 . 若
,且
,
的最小值为m,
的最大值为n,则mn为___________ ,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a6f362a7f8f972d6b329a882e940d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9768f23f050e76e0774c95d5a9e4077f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a14861a3eaf888f1c0c0a5e5fe967be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc5b21f538b56163054fd1e6202c9a2.png)
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解题方法
3 . 已知实数
且
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0cb6220005e5dbd9999e537aa90d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7696cf6cd983f29d8834c6df01c5fb27.png)
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2023-02-19更新
|
462次组卷
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3卷引用:江苏省常州市前黄高级中学2022-2023学年高一下学期2月学情检测数学试题
2023·全国·模拟预测
4 . 已知a,b,c均为正数,且满足
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88fe869d2900defd402115287c6e467d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/977c8d526c63ebe9eba79f55d7a33464.png)
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5 . 设抛物线
的焦点是
, 直线
与抛物线
相交于
、
两点, 且
, 线段
的中点
到抛物线
的准线的距离为
, 则
的最小值为_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8098a6b57a05154a5c154c03ed96ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211f11b5b5262dae696554a0145df6ce.png)
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2023-02-16更新
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3卷引用:四川省南充高级中学2023届高考模拟检测七文科数学试题
解题方法
6 . 函数
,
,且
的最大值为3,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f992d29990e4b6e962d5748f5126bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5f7f23e7f20dd8bc65a4967cd306782.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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2023-02-11更新
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3卷引用:第94练 计算速度训练14
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7 . 已知
,
,且
,则
的最大值是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74117a5d2acc72ba3dc1bb59b3dbddb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
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2023-02-09更新
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2卷引用:湘豫名校联考2023届高三下学期2月入学摸底考试数学(理科)试题
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8 . 已知正数
和实数
满足
,若
存在最大值,则
的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5453c472b58d76341a40937865db26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2023-02-07更新
|
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2卷引用:黑龙江省哈尔滨市第九中学校2022-2023学年高一下学期开学考试数学试卷
名校
9 . 已知
,
,
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7135187b2884d1442fff7cd85a73e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/407e4330cfdd5cd0bcfd4f3bd1a898e6.png)
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10 . 已知正数a、b满足:直线
与圆
相切,则
的最大值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d4e0ff2f771eb4657193ec1afba3f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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2023-01-30更新
|
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2卷引用:沪教版(2020) 一轮复习 堂堂清 第七单元 7.4 圆方程